Final temperature-nugget of pure gold
A 4.70 g nugget of pure gold absorbed 278 J of heat. The initial temperature was 28.0°C. What was the final temperature?
Expected delivery within 24 Hours
A solution is prepared by adding 60.0 mL of 0.060 M HBr to 180.0 mL of 0.70 M HI. Calculate the concentrations of all species in this solution. HBr and HI are both considered strong acids.
What is the boiling point of a mixture composed of 95.0 g HOCH2CH2OH (ethylene glycol) and 205 g H2O? The boiling point elevation constant for H2O is 0.512 °C/m.
When 25.0g os H2O reacts with 65g of Fe, which is the limiting reactant? How much excess reactant is used when the reaction is completed? What mass in grams of black iron oxide is produced?
Calculate the heat that must be supplied to 10.8 g of Ne at .15 atm to raise its temperature from 28C to 51C at constant pressure. Assume that neon behaaves as an ideal gas.
What is the pH at the point during a titration when 34 mL of 0.200 M HCl has been added to 33 mL of 0.0500 M NH3 solution? HCl is strong acid, Kb = 1.8 × 10-5 for NH3.
At room temperature however, aspirin is not soluble in this particular solvent but all the impurities remain soluble. Describe how to use this solvent to purify aspirin crystals away from the impurities.
Vector r makes angle of 30 degree with x- axis, and 70 degree with y-axis,and it is in the positive octant. vector s makes angle of 45 degree with x-axis , and 60 degree with y-axis , and it is also in the positive octant.
An unidentified organic compound X, containing C,H, and O was subjected to combustion analysis. When 228.4 mg of pure X was burned 627.4 mg of CO2 and 171.2 mg of H2O were obtained. Determine the simplest formula of the compound X.
1929738
Questions Asked
3,689
Active Tutors
1430227
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
Question: Which of the following are forms of media bias? (Select all that apply)
Compose a paper that compares and contrasts critical feminist theory and power-control theory as forms of gendered criminology. Your paper should:
Even though are coastlines are very vulnerable to multiple climate change impacts, the good news is that because most of our urban settlements
Question: What is meant by indigenismo (Keywords in Week 2)? What is las cronicas de castas (Cope)?
When people get involved in community and social change but do not hold official political positions, which of the terms best describes what they are part of
Q1. Explain how the Code of the Suburbs differs from the Code of the Street? Q2. Explain your general thoughts on the book.
Question: Examine gender inequality on a global scale, considering how factors such as globalization, colonialism